120 



C. M. JACKSON 



merits by immersion for about one hour in 1 per cent aqueous 

 'gold dust 'solution at 90°C., constitute the 'cartilaginous skele- 

 ton' (table 7 b). Finally the cartilaginous skeleton dried in 

 an oven at 95°C. to constant weight constitutes the 'dry skele- 

 ton' (table? c). 



An examination of the weight of the ligamentous skeleton 

 (table 7 a) reveals the striking fact that while the body-weight 



TABLE 7 



The skeleton; average absolute weight, average percentage of net body-weight and 



range indicated 



